Mercurial > hg > toybox
annotate toys/posix/kill.c @ 1172:db517206d752 draft
Cosmetic tweak.
author | Rob Landley <rob@landley.net> |
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date | Sat, 28 Dec 2013 17:06:55 -0600 |
parents | 6cc69be43c42 |
children | cae43f3cfff4 |
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1 /* kill.c - a program to send signals to processes |
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2 * |
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3 * Copyright 2012 Daniel Walter <d.walter@0x90.at> |
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4 * |
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5 * See http://opengroup.org/onlinepubs/9699919799/utilities/kill.html |
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6 |
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Teach lib/args.c that " " this option must take a _separate_ argument, so "kill -stop" and "kill -s top" aren't the same thing. Make kill.c use it, and remove leftover debug printfs.
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7 USE_KILL(NEWTOY(kill, "?s: l", TOYFLAG_BIN)) |
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8 |
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9 config KILL |
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10 bool "kill" |
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11 default y |
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12 help |
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13 usage: kill [-l [SIGNAL] | -s SIGNAL | -SIGNAL] pid... |
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14 |
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15 Send a signal to a process |
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16 */ |
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17 |
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New build infrastructure to generate FLAG_ macros and TT alias, #define FOR_commandname before #including toys.h to trigger it. Rename DEFINE_GLOBALS() to just GLOBALS() (because I could never remember if it was DECLARE_GLOBALS). Convert existing commands to use new infrastructure, and replace optflag constants with FLAG_ macros where appropriate.
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18 #define FOR_kill |
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19 #include "toys.h" |
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20 |
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21 GLOBALS( |
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22 char *signame; |
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23 ) |
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24 |
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25 void kill_main(void) |
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26 { |
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27 int signum; |
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28 char *tmp, **args = toys.optargs; |
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29 pid_t pid; |
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30 |
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31 // list signal(s) |
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32 if (toys.optflags & FLAG_l) { |
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33 if (*args) { |
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34 int signum = sig_to_num(*args); |
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35 char *s = NULL; |
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36 |
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37 if (signum>=0) s = num_to_sig(signum&127); |
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38 puts(s ? s : "UNKNOWN"); |
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39 } else sig_to_num(NULL); |
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40 return; |
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41 } |
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42 |
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43 // signal must come before pids, so "kill -9 -1" isn't confusing. |
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44 |
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45 if (!TT.signame && *args && **args=='-') TT.signame=*(args++)+1; |
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46 if (TT.signame) { |
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47 char *arg; |
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48 int i = strtol(TT.signame, &arg, 10); |
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49 if (!*arg) arg = num_to_sig(i); |
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50 else arg = TT.signame; |
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51 |
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52 if (!arg || -1 == (signum = sig_to_num(arg))) |
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53 error_exit("Unknown signal '%s'", arg); |
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54 } else signum = SIGTERM; |
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55 |
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56 if (!*args) { |
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57 toys.exithelp++; |
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58 error_exit("missing argument"); |
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59 } |
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60 |
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61 while (*args) { |
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62 char *arg = *(args++); |
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63 |
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64 pid = strtol(arg, &tmp, 10); |
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65 if (*tmp || kill(pid, signum) < 0) error_msg("unknown pid '%s'", arg); |
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66 } |
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67 } |